PSI - Issue 26

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Sergiu-Valentin Galatanu et al. / Procedia Structural Integrity 26 (2020) 269–276 Sergiu-Valentin Galatanu et al. / Structural Integrity Procedia 00 (2019) 000 – 000

273

400

S1 S2 S3 S4 S5 S6 S7

300

200

100 Force [N]

0

0

10

20

30

Displacement [mm]

Fig. 4. Force – Displacement curves obtained for seven specimens under static bending tests

Table 1. Bending properties obtained from static tests.

Test Speed [m/s] 0.001 0.001 0.001 0.001 0.001 0.001 0.001

Ductility [-]

Displacement at the maximum force δ [mm]

Absorbed energy at the maximum force W [J]

Maximum Force F max [N]

Specimen

398.23 342.42 346.25 333.54 352.84 331.71 348.43 350.49

21.62 20.45 22.94 20.77 20.49 20.90 21.56 21.25

6.27 5.14 5.21 5.15 5.34 5.19 5.59 5.41

19.15 18.76 15.31 17.33 16.37 16.15 17.52 17.23

S1 S2 S3 S4 S5 S6 S7

Average

3.2. Dynamic Tests Results The force-displacement curves obtained for three different specimens (namely, SD10, SD3, SD12) under dynamic bending tests are given in Fig. 5. The curves are plotted for different values of test speed in m/s: 1, 3, 5. For comparison, the force-displacement curve obtained for the quasi-static test referred to as S1 in Fig. 4, is also plotted in the same figure.

0 100 200 300 400 500 600 700 800

SD 10 [1 m/s] SD 3 [3 m/s] SD 12 [5 m/s] S1 [0.001 m/s]

Load [N]

0

5

10

15

20

25

30

Displacement [mm]

Fig. 5. Force – Displacement curves obtained for specimens under dynamic bending tests. The quasi-static curve is also provided for comparison in the figure.